Prepped the forward top skin. Back riveted the mounting strips for the instrument panel. measured and drilled GPS antenna holes in both sides of the inner top skin. One for the Dynon and one for the Garmin GPS antennas. Went over the entire forward section of the aircraft. tie wrapping. inspecting. Torqued the vent line mounts, brake lines etc. Fit the top skin for hopefully the last time. I will take a break here and let things settle. I will make the final decision to rivet the top skin tomorrow...